US20130229782A1 - External Mechanical Battery Disconnect for Emergency Lighting Products - Google Patents
External Mechanical Battery Disconnect for Emergency Lighting Products Download PDFInfo
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- US20130229782A1 US20130229782A1 US13/780,328 US201313780328A US2013229782A1 US 20130229782 A1 US20130229782 A1 US 20130229782A1 US 201313780328 A US201313780328 A US 201313780328A US 2013229782 A1 US2013229782 A1 US 2013229782A1
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- United States
- Prior art keywords
- switching mechanism
- contact
- leaf spring
- lighting device
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
- F21S9/022—Emergency lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0418—Constructional details
- G09F2013/05—Constructional details indicating exit way or orientation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
Definitions
- the present invention relates generally to emergency lighting devices and more particularly, to emergency lighting devices having an internal battery capable of being disconnected externally.
- Conventional emergency lighting devices are relied on during emergency situations, such as power outages.
- An emergency lighting device is an exit sign.
- these emergency devices are required to exhibit a specific amount of illumination and have an emergency backup power source to provide illumination for a specified period of time when electrical power to the device is interrupted.
- These conventional emergency lighting devices include circuitry that illuminates emergency lights during a power outage using an internal battery or similar power supply.
- emergency lighting devices are thoroughly tested at the factory to ensure that they will function properly once installed.
- the emergency lighting device is completely assembled.
- the circuitry is then coupled to a testing machine to ensure proper functioning.
- the device's battery is disconnected from the circuitry so that the battery's charge is not reduced below an acceptable level prior to installation.
- the emergency lighting device is then sent from the factory.
- an emergency lighting device can include a housing that can further include a battery, a switching mechanism, and one or more light sources.
- the switching mechanism can be electrically coupled to the battery.
- the light sources can be electrically coupled to the internal battery through the switching mechanism.
- the switching mechanism can receive a plug that electrically disconnects the light sources from the battery.
- an emergency lighting device can include a housing that can further include a battery, a switching mechanism, one or more light sources, and a circuit breaker.
- the switching mechanism can be electrically coupled to the battery.
- the light sources can be electrically coupled to the battery through the switching mechanism and can also be electrically coupled to an external power source.
- the circuit breaker can be electrically coupled to the battery and to the external power source.
- the circuit breaker can be electrically positioned upstream of the one or more light sources and downstream of the battery, the switching mechanism, and the external power source.
- the circuit breaker can provide power to the light sources from the external power supply during normal operation and can automatically provide power to the light sources from the internal battery in the event of power failure from the external power source.
- the switching mechanism can receive an external plug to electrically disconnect the light sources from the battery.
- a method for installing an emergency lighting device can include mounting an emergency lighting device onto a mounting structure, electrically coupling the emergency lighting device to an external power source, and removing an external plug from a switching mechanism to enable operation of a back-up power source.
- the emergency lighting device can include a housing and an external plug.
- the housing can include a battery, a switching mechanism, and one or more light sources.
- the battery can provide a back-up power source.
- the switching mechanism can be electrically coupled to the battery.
- the light sources can be electrically coupled to the battery through the switching mechanism.
- the external plug can be releasably coupled to the switching mechanism.
- FIG. 1A is a front elevation view of an assembled exit sign in accordance with an exemplary embodiment of the present invention
- FIG. 1B is a perspective view of the exit sign of FIG. 1A in accordance with an exemplary embodiment of the present invention
- FIG. 2A is a perspective view of a frame of the exit sign with a mechanical disconnect male jack coupled to the frame in accordance with an exemplary embodiment of the present invention
- FIG. 2B is a perspective view of the frame of FIG. 2A with the mechanical disconnect male jack decoupled from the frame in accordance with an exemplary embodiment of the present invention
- FIG. 3A is a perspective view of an audio jack presented in FIG. 2A in accordance with an exemplary embodiment of the present invention
- FIG. 3B is a side elevation view of the audio jack of FIG. 3A in accordance with an exemplary embodiment of the present invention
- FIG. 4 is a cross-sectional view of the interaction between the audio jack of FIGS. 3A and 3B and the mechanical disconnect male jack in accordance with an exemplary embodiment of the present invention
- FIG. 5 is a schematic block diagram of the exit sign of FIG. 1A in accordance with an exemplary embodiment of the present invention
- FIG. 6A is a perspective view of an alternative switching mechanism in accordance with another exemplary embodiment of the present invention.
- FIG. 6B is a side view of the switching mechanism of FIG. 6A in accordance with an exemplary embodiment of the present invention.
- FIG. 7A is a perspective view of a second alternative switching mechanism in accordance with yet another exemplary embodiment of the present invention.
- FIG. 7B is a side view of the switching mechanism of FIG. 7A in accordance with an exemplary embodiment of the present invention.
- the present invention is directed to emergency lighting devices having a battery capable of being disconnected externally.
- exit signs Although the description of exemplary embodiments is provided below in conjunction with exit signs, alternate embodiments of the invention may be applicable to other types of emergency lighting devices that have a battery installed within the device. Additionally, although the description of exemplary embodiments is provided below in conjunction with light emitting diodes (LEDs) in an exit sign, alternate embodiments of the invention is applicable to other types of light sources in an emergency lighting device including, but not limited to, incandescent lamps, fluorescent lamps, compact fluorescent lamps, organic light emitting diodes, high intensity discharge (“HID”) lamps, or a combination of lamp types known to persons of ordinary skill in the art.
- LEDs light emitting diodes
- FIG. 1A is a front elevation view of an assembled exit sign 100 in accordance with an exemplary embodiment of the present invention.
- FIG. 1B is a perspective view of the assembled exit sign 100 of FIG. 1A in accordance with an exemplary embodiment of the present invention.
- the assembled exit sign 100 includes a housing 110 , a canopy 150 coupled to the housing 110 , and a switching mechanism access opening 160 formed at an exterior surface of the housing 110 .
- the housing 110 includes a front panel 120 , a frame 130 , and a rear panel 140 , which collectively form the housing's top edge 112 , bottom edge 114 , first side edge 116 , and second side edge 118 .
- the front panel 120 in this exemplary embodiment is substantially rectangular, the front panel 120 can be any geometric or non-geometric shape without departing from the scope and spirit of the exemplary embodiment.
- the front panel 120 is removably coupled to the frame 130 using fasteners, clips, snap fittings, screws, or any other coupling device or method known to people having ordinary skill in the art.
- the exemplary front panel 120 is generally non-transparent and includes four light passageway openings 122 A, 122 B, 122 C, and 122 D that define the four letters, or four indicia, in capitalized mode of the word “EXIT”, respectively, that extend horizontally in the middle area of the front panel 120 .
- Light beams projected from one or more LEDs 230 FIG. 2A ) pass through each light passageway opening 122 A, 122 B, 122 C, and 122 D for eventual viewing by an observer.
- four light passageway openings 122 A, 122 B, 122 C, and 122 D are illustrated, any number of light passageway openings are employable for illustrating any other word, symbol, or illustration without departing from the scope and spirit of the exemplary embodiment.
- the front panel 120 optionally includes two additional light passageway openings that define directional symbols, namely, opposed chevron arrow openings 124 A and 124 B through which light beams projected from the LEDs 230 ( FIG. 2A ) also pass.
- the front panel 120 is clear and translucent, but at least some portions thereof are made non-translucent by a manner known in the art, such as by the application of paint or another masking medium.
- the exemplary frame 130 is substantially rectangular and is configured to be coupled to the front panel 120 and the rear panel 140 .
- the frame 130 is capable of being any geometric or non-geometric shape without departing from the scope and spirit of the exemplary embodiment.
- the frame 130 includes a canopy 150 coupled to the frame's top edge.
- the canopy 150 provides support for coupling the exit sign 100 to a ceiling or wall structure (not shown).
- other mounting devices known to people of ordinary skill in the art are incorporated into or used in conjunction with the frame 130 to mount the exit sign 100 to a ceiling, mounting pole, wall, or other mounting structures.
- the frame 130 also includes the switching mechanism access opening 160 .
- the opening 160 is formed at the frame's side edge towards its lower area.
- the switching mechanism access opening 160 is capable of being formed anywhere along the housing's exterior surface, adjacent the switching mechanism 240 ( FIG. 2A ), without departing from the scope and spirit of the exemplary embodiment.
- the switching mechanism access opening 160 extends from the frame's exterior surface towards the frame's interior surface.
- the switching mechanism access opening 160 allows visual and/or physical access to the switching mechanism 240 ( FIG. 2A ).
- the switching mechanism 240 receives at least a portion of the mechanical disconnect male jack 190 to mechanically break (or disconnect) the electrical path between the removable internal battery 220 ( FIG.
- the DC power disconnect test switch 170 and the DC power indicator 175 are positioned adjacent to the switching mechanism access opening 160 .
- the function of the DC power disconnect test switch 170 is to test the proper functionality of the internal battery 220 ( FIG. 2A ) by simulating the interruption of DC voltage power when pressed inwardly.
- the function of the DC power indicator 175 is to signal the presence of AC voltage power.
- the DC power indicator 175 is and LED.
- the rear panel 140 is substantially rectangular and is removably coupled to the frame 130 opposite the front panel 120 .
- the rear panel 140 is modifiable to any geometric or non-geometric shape without departing from the scope and spirit of the exemplary embodiment.
- the rear panel 140 is removably coupled to the frame 130 using fasteners, clips, snap fittings, screws, or any other coupling devices or method known to people having ordinary skill in the art.
- the rear panel 140 is generally non-transparent. Although, both the front panel 120 and the rear panel 140 are removable, alternative exemplary embodiments provide for only one of them being removable.
- the rear panel 140 is similar to the embodiments as described for the front panel 120 .
- the rear panel 120 is generally non-transparent and include one or more light passageway openings that illustrate any word, symbol, or illustration without departing from the scope and spirit of the exemplary embodiment.
- the rear panel 140 is clear and translucent, but is made non-translucent by a manner known in the art, such as by the application of paint or other masking medium.
- FIG. 2A is a perspective view of the exit sign 100 with a mechanical disconnect male jack 190 coupled to the frame 130 in accordance with an exemplary embodiment of the present invention.
- FIG. 2B is a perspective view of the frame 130 of FIG. 2A with the mechanical disconnect male jack 190 decoupled from the frame 130 in accordance with an exemplary embodiment of the present invention.
- the frame 130 includes a circuit board 210 having an internal battery 220 , one or more LEDs 230 , a DC power disconnect test switch 170 , a DC power indicator 175 , and a switching mechanism 240 .
- the LEDs 230 are electrically coupled to, and in one exemplary embodiment, mounted onto, the circuit board 210 .
- the LEDs 230 provide light sources that emit light through portions of the front panel 120 .
- the LEDs 230 are supplied power from an external power source (not shown).
- the internal battery 220 supplies back-up power to the LEDs 230 so that the LEDs 230 can function continuously without interruption.
- the internal battery 220 is designed to provide emergency back-up power for a predetermined time period.
- the LEDs 230 will be powered by the internal battery 220 until either the power from the external power source is restored or the charge on the internal battery 220 is depleted.
- the LEDs 230 emit light in only one color. However, in alternative embodiments, the LEDs 230 emit light in two or more different colors. In the embodiments with two or more different colored LEDs 230 , the LEDs of one color can operate simultaneously with the LEDs of another color or the LEDs of one color can operate in lieu of the LEDs of another color.
- the function of the DC power disconnect test switch 170 is to test the electronic of the backup system to internal battery 220 by simulating the interruption of DC voltage power that is eventually generated from the external power source.
- a portion of the DC power disconnect test switch 170 is accessible from the exterior of the frame 130 so that a user can operate the DC power disconnect test switch 170 when desired. Upon testing this backup system and determining that the LEDs 230 are not functioning, the user can replace the internal battery 220 .
- the DC power indicator 175 is also electrically coupled to the circuit board 210 .
- the indicator 175 is electrically coupled along another end of the circuit board 210 opposite the end where the exemplary internal battery 220 is electrically coupled.
- the DC power indicator 175 can be electrically coupled anywhere on the circuit board 210 or anywhere in the housing 110 without departing from the scope and spirit of the exemplary embodiment.
- the DC power indicator 175 is positioned downstream in the circuitry from the DC power disconnect test switch 170 but parallel to the circuitry between the internal battery 220 and the LEDs 230 .
- the function of the DC power indicator 175 is to signal the presence of AC voltage power.
- At least a portion of the DC power indicator 175 is viewable to an observer so that the observer is able to determine whether there is a presence of AC voltage power to the circuit board 210 .
- the DC power indicator 175 When the DC power indicator 175 is not lit, it indicates that AC voltage power is not supplied to the circuit board.
- the LEDs 230 are lit up when the DC power indicator 175 is not lit, the internal battery 220 is supplying the necessary power to the LED 230 since there is no AC power being supplied to the circuit board 210 .
- the LEDs 230 are not lit, either the internal battery 220 is not properly functioning and may need replacement or the circuitry between the internal battery 220 and the LEDs 230 has malfunctioned.
- the switching mechanism 240 is also electrically coupled to the circuit board 210 .
- the switching mechanism 240 is electrically coupled at the end of the circuit board 210 opposite the end where the internal battery 220 is electrically coupled.
- the switching mechanism 240 is electrically coupled between the DC power indicator 175 and the DC power disconnect test switch 170 .
- the switching mechanism 240 is capable of being electrically coupled anywhere on the circuit board 210 or anywhere in the housing 110 so long as the switching mechanism 240 is positioned adjacent the switching mechanism access opening 160 without departing from the scope and spirit of the exemplary embodiment.
- the switching mechanism 240 is positioned downstream in the circuitry from the internal battery 210 and upstream of the LEDs 230 .
- the switching mechanism 240 provides an external electrical disconnect within the circuitry between the internal battery 220 and the LEDs 230 so that the battery 220 does not discharge to below acceptable levels prior to the exit sign 100 being installed.
- the switching mechanism 240 includes a female receptacle 242 that is accessible from the frame's exterior so that at least a portion of the mechanical disconnect male jack 190 is insertable therein.
- the switching mechanism 240 is a mono audio jack 300 ( FIGS. 3A and 3B ).
- the switching mechanism includes any device, such as a phone jack, that is normally closed and becomes open once an object is inserted within the device without departing from the scope and spirit of the exemplary embodiment.
- a portion of the mechanical disconnect male jack 190 is inserted within the female receptacle 242 of the switching mechanism 240 to electrically disconnect the circuitry between the internal battery 220 and the LEDs 230 .
- This feature is called an external disconnect feature.
- the internal battery 220 does not discharge electrical energy to the LEDs 230 .
- the circuit breaker is de-energized when the mechanical disconnect male jack 190 is inserted within the switching mechanism 240 .
- This switching mechanism 240 and insertion of the mechanical disconnect male jack 190 within the switching mechanism 240 allows the internal battery 220 to be installed in the exit sign 100 and mechanically coupled to the circuit board 210 prior to purchase.
- the exit sign 100 does not have to be disassembled to install the internal battery 220 . Additionally, the exit sign 100 does not have to be disassembled to de-energize the circuit breaker for building inspection, but instead, the circuit is de-energized by using the external disconnect feature. Once the mechanical disconnect male jack 190 is removed from the female receptacle 242 , as shown in FIG. 2B , the circuitry between the internal battery 220 and the LEDs 230 is electrically recoupled and the internal battery 220 is able to provide electrical power to the LEDs 230 if the AC power source fails.
- the exemplary mechanical disconnect male jack 190 includes a plug end 192 that is insertable into the female receptacle 242 of the switching mechanism 240 .
- the plug end 192 is fabricated from plastic.
- the plug end 192 is fabricated from any suitable non-conducting material including, but not limited to, paper, wood, and fish paper without departing from the scope and spirit of the exemplary embodiment.
- the plug end 192 is fabricated from conducting and non-conducting materials, wherein at least a portion of the non-conducting material is inserted into the female receptacle 242 to break the electrical connection within the switching mechanism 240 .
- a plug end 192 fabricated from conducting material is surrounded or sheathed by a non-conducting material.
- the plug end 192 is coupled to a sign 194 .
- the sign 194 is fabricated from the same material as the plug end 192 .
- the sign 194 is fabricated from either non-conducting material, conducting material, or a combination of both conducting and non-conducting materials.
- the exemplary sign 194 is alternatively a physical representation of its function, for example, a “Stop Sign”, a written representation of its function, for example, the words “Stop: Battery Disconnected”, a device that is easier for a user grasp, or any combination thereof.
- FIGS. 3A and 3B are views of the audio jack 300 of FIG. 2A in accordance with an exemplary embodiment of the present invention.
- FIG. 4 is a cross-sectional view of the interaction between the audio jack 300 and the mechanical disconnect male jack according to an exemplary embodiment of the present invention.
- the audio jack 300 includes an audio jack housing 310 , a port 320 , a first leg 330 , a second leg 332 , and a third leg 334 .
- the audio jack 300 is a mono audio jack.
- the exemplary audio jack housing 310 is substantially rectangular and houses a first metal contact 414 and a second metal contact 416 , which will be discussed in further detail below. Although this exemplary embodiment depicts the audio jack housing 310 being substantially rectangular, the audio jack housing 310 is capable of being any geometric or non-geometric shape, including, but not limited to, square, circular, triangular or trapezoidal, without departing from the scope and spirit of the exemplary embodiment. Additionally, although the exemplary audio jack housing 310 houses two metal contacts 414 and 416 , alternative embodiments include more than two metal contacts housed within the audio jack housing 310 without departing from the scope and spirit of the exemplary embodiment. In one exemplary embodiment, the audio jack housing 310 is fabricated from a non-conductive material, such as a plastic.
- the port 320 is substantially circular and is coupled to the audio jack housing's surface. Although the exemplary port 320 is circular, alternative embodiments of the port 320 are any geometric or non-geometric shape that securely receive the corresponding plug end 192 .
- the port 320 securely receive the plug end 192 of the mechanical disconnect male jack 190 through the port's 320 female receptacle 242 , which extends from the exterior surface of the port 320 to the interior of the audio jack housing 310 . In one exemplary embodiment, there is a friction fit between the port 320 and the plug end 192 of the jack 190 .
- the plug end 192 is removable from the port 320 by applying a pulling force to the plug end 192 to overcome the friction fit.
- the port 320 is fabricated from the same material as the audio jack housing 310 and is generally manufactured with the audio jack housing 310 as an integral component. However, the port 320 can be fabricated separately and thereafter coupled to the audio jack housing 310 . In those embodiments where the port 320 is separately manufactured, the port 320 is typically fabricated from a conducting material or a non-conducting material. Additionally, the exemplary port 320 is positioned so that the female receptacle 242 is aligned with a connection point 430 , which is where the first metal contact 414 makes contact with the second metal contact 416 .
- the first leg 330 , second leg 332 , and third leg 334 are coupled to the audio jack housing 310 and make contact with either the first metal contact 414 or the second metal contact 416 .
- the legs 330 , 332 , and 334 are fabricated using a conductive material, such as a metal and are used to mount the audio jack 300 to the circuit board 210 ( FIG. 2A ), where conductive traces (not shown) are coupled to at least two of the legs 330 , 332 , and 334 .
- the audio jack 300 is mounted to the circuit board 210 in such a manner that the port 320 is aligned with the switching mechanism access opening 160 ( FIG. 1A ).
- the audio jack 300 is mounted onto a circuit board 210 ( FIG. 2A ), such that the first leg 330 is coupled to a current-in trace line 410 and the second leg 332 is coupled to a current-out trace line 420 .
- the first leg 330 and third leg 334 are connected to the first metal contact 414 at its opposing ends.
- the second leg 332 is coupled to the second metal contact 416 .
- the second metal contact 416 makes contact with the first metal contact 414 at the connection point 430 .
- the first metal contact 414 and second metal contact 416 are normally closed.
- Opening the first metal contact 414 and second metal contact 416 is accomplished by placing a device, such as a plug or jack, through the female receptacle 242 of the port 320 so that the device extends to the connection point 430 and breaks the contact between the second metal contact 416 and the first metal contact 414 .
- a device such as a plug or jack
- the exemplary first metal contact 414 and second metal contact 416 are fabricated from a metal or metal alloy, alternatively they are fabricated from any conducting material without departing from the scope and spirit of the exemplary embodiment.
- first leg 330 , the first metal contact 414 , and the third leg 334 are shown to be fabricated as individual components, the first leg 330 , the first metal contact 414 , and third leg 334 can be fabricated as a single component without departing from the scope and spirit of the exemplary embodiment.
- the exemplary second leg 332 and second metal contact 416 are fabricated individually, alternative embodiments of the second leg 332 and second metal contact 416 are fabricated as a single component without departing from the scope and spirit of the exemplary embodiment.
- the plug end 192 When the plug end 192 is inserted within the audio jack 300 , current flow is prevented between the internal battery 220 ( FIG. 2A ) and the LEDs 230 ( FIG. 2A ) due to an opening in the circuit.
- the second metal contact 416 is raised so that the second metal contact 416 does not make contact, thereby creating an open, with the first metal contact 414 and eliminating the connection point 430 .
- the internal battery 220 FIG. 2A
- the internal battery 220 ( FIG. 2A ) can now be electrically coupled to the circuit board 210 ( FIG. 2A ) and shipped in an installation-ready state with the plug end 192 inserted within the audio jack 300 .
- the mechanical disconnect male jack plug end 192 can be easily inserted into and removed from the audio jack 300 any number of times.
- FIG. 5 is a schematic block diagram 500 of the exit sign 100 of FIG. 1A in accordance with an exemplary embodiment of the present invention.
- the usual source of power to an emergency exit sign is alternating current voltage or VAC 505 .
- Standard AC voltages for operating the exit sign 100 include 120V, 240V, or 277V. Since the input AC voltage is high, a step-down transformer typified by step-down transformer 510 is sometimes used to bring the input voltage down to a lower operating AC voltage, for example 8 VAC.
- the 8 VAC is then passed through an AC/DC converter 515 .
- the AC/DC converter 515 is a bridge rectifier.
- the direct current voltage or VDC is then connected to a momentary DC power disconnect test switch 170 that is normally closed.
- the function of DC power disconnect test switch 170 is to test the electronic circuitry of the backup system to the internal battery 220 by simulating the interruption of AC voltage power.
- the DC power disconnect test switch 170 is operated and the switch is opened, converted DC voltage from the VAC 505 to the LEDs 230 is terminated.
- the AC/DC converter 515 also is connected to ground 535 thereby completing the current path through the AC/DC converter 515 when the DC power disconnect test switch 170 is operated.
- the DC power disconnect test switch 170 is operated, power to the LEDs 230 is supplied from the internal battery 220 .
- the LEDs 230 are connected to ground 535 , thereby completing the current paths through LEDs 230 , irrespective of whether the power is supplied by the VAC 505 or the internal battery 220 .
- the DC voltage flows from the DC power disconnect test switch 170 to the DC power indicator 175 , which signals the presence of AC voltage power when lit.
- the DC power indicator 175 is connected to ground 535 thereby completing the current path through DC power indicator 175 .
- the DC voltage flows from the DC power disconnect test switch 170 to a charging circuit 520 , which is then connected to the rechargeable internal battery 220 .
- the internal battery 220 is recharged from the power provided by the VAC 505 .
- the DC voltage flows from the DC power disconnect test switch 170 to a circuit breaker 525 .
- the output of the circuit breaker 525 then goes through a current limiter 530 , and then to the LEDs 230 .
- the function of the circuit breaker 525 is to provide power to the LEDs 230 when normal input DC voltage is present, but will automatically switch over to backup internal battery 220 DC power in the event of an input AC power failure.
- FIG. 6A is a perspective view of an alternative switching mechanism 600 in accordance with another exemplary embodiment of the present invention.
- FIG. 6B is a side view of the alternative switching mechanism 600 of FIG. 6A .
- alternative switching mechanism 600 includes a button contact 610 and a leaf spring contact 650 .
- the button contact 610 includes a button contact housing 620 , a button 630 , a first leg 640 , a second leg 642 , and a third leg 644 .
- the button contact housing 620 is substantially rectangular when viewed from its front surface 612 and substantially triangular when viewed from its side surface 614 .
- the button contact housing 620 is capable of being formed in any geometric or non-geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment.
- the button contact housing 620 is fabricated from a conductive material including. Examples of potential conductive materials include, but are not limited to, metals and metal alloys.
- the button 630 is substantially circular and is configured to protrude outwardly from the button contact housing front surface 612 .
- the button 630 is made in other geometric or non-geometric shapes.
- a recess is formed within the button 630 .
- the recess is optional.
- the button is integrally formed with the button contact housing 620 .
- the exemplary button 630 is fabricated from a conductive material, examples of which include, but are not limited to, metals and metal alloys.
- the first leg 640 , second leg 642 , and third leg 644 are coupled to the button contact housing 620 .
- the legs 640 , 642 , and 644 are fabricated using a conductive material, such as a metal. These legs 640 , 642 , and 644 are used to mount the button contact 610 to the circuit board 210 ( FIG. 2A ).
- leg 644 also electrically couples the button contact 610 to a conductive trace (not shown) on the circuit board 210 ( FIG. 2A ).
- any of the legs are capable of electrically coupling the button contact 610 to the trace without departing from the scope and spirit of the exemplary embodiment. Additionally, the number of legs can be greater or less without departing from the scope and spirit of the exemplary embodiment.
- the leaf spring contact 650 includes a leaf spring contact housing 660 , a leaf spring 670 , a first leg 680 , a second leg 682 , and a third leg 684 .
- the leaf spring contact housing 660 is substantially rectangular when viewed from its front surface 652 and substantially triangular when viewed from its side surface 654 .
- this exemplary embodiment depicts the leaf spring contact housing 660 being substantially rectangular when viewed from its front surface 652 and substantially triangular when viewed from its side surface 654
- other alternative exemplary embodiments can have the leaf spring contact housing's 660 shape be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment.
- the leaf spring contact housing 660 is fabricated from a conductive material including, but not limited to metals and metal alloys.
- the first leg 680 , the second leg 682 , and the third leg 684 are coupled to the leaf spring contact housing 660 .
- the legs 680 , 682 , and 684 are fabricated using a conductive material, such as a metal. These legs 680 , 682 , and 684 are used to mount the leaf spring contact 650 to the circuit board 210 ( FIG. 2A ). Leg 684 also is used to electrically couple the leaf spring contact 650 to a second conductive trace (not shown) on the circuit board ( FIG. 2A ). Although leg 684 is used to electrically couple the leaf spring contact 650 to a second conductive trace (not shown) on the circuit board 210 ( FIG.
- any of the legs can be used to electrically couple the leaf spring contact 650 to the second trace without departing from the scope and spirit of the exemplary embodiment. Additionally, although three legs are used in this embodiment, the number of legs can be greater or less without departing from the scope and spirit of the exemplary embodiment.
- the front surface 612 of the button contact 610 faces the front surface 652 of the leaf spring contact 650 .
- the button contact 610 and the leaf spring contact 650 are mounted in close proximity to one another so that the leaf spring 670 is contacting the button 630 to form a connection point 690 , as shown in FIG. 6B .
- the mechanical disconnect male jack's 190 ( FIG. 2B ) plug end 192 ( FIG. 2B ) is inserted between the button contact 610 and the leaf spring contact 650 , the electrical contact between the leaf spring 670 and the button 630 is broken. In other words, the connection point 670 is eliminated.
- the mechanical disconnect male jack's 190 can be a piece of paper, piece of cardboard, or any other non-conducting material that is insertable between the button contact 610 and the leaf spring contact 650 .
- FIGS. 7A and 7B are views of a second alternative switching mechanism 700 in accordance with yet another exemplary embodiment of the present invention.
- the second alternative switching mechanism 700 includes a first leaf spring contact 710 and a second leaf spring contact 750 .
- the first leaf spring contact 710 includes a base 720 , a vertical transition 730 , and a leaf spring 740 .
- the base 720 is substantially planar and includes an opening 722 for allowing the base 720 to be surface mounted onto the circuit board 210 ( FIG. 2A ).
- the base 720 is substantially rectangular when viewed from above. Although this exemplary embodiment depicts the base 720 being substantially rectangular when viewed from above, other alternative exemplary embodiments can have the base 720 be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment.
- the base 720 is fabricated from a conductive material including, but not limited to metals and metal alloys.
- the vertical transition 730 is substantially planar and is oriented substantially perpendicular in one direction to the base 720 .
- the vertical transition 730 is substantially rectangular when viewed from the front surface 732 of the vertical transition 730 .
- this exemplary embodiment depicts the vertical transition 730 being substantially rectangular when viewed from the front surface 732
- other alternative exemplary embodiments can have the vertical transition 730 be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment.
- the vertical transition 730 is fabricated from a conductive material including, but not limited to metals and metal alloys. Typically, the vertical transition 730 is fabricated integrally to the base 720 .
- the vertical transition 730 is depicted as being substantially perpendicular to the base 720 , the vertical transition 730 can be angular to the base 720 without departing from the scope and spirit of the exemplary embodiment.
- the leaf spring 740 is substantially chevron-shaped and is configured to protrude outwardly from the upper edge of the vertical transition's 730 front surface 732 .
- the leaf spring 740 is integrally formed with the vertical transition 730 .
- the leaf spring 740 is shown to be chevron-shaped, the leaf spring 740 can be any geometric shape, such as a curve-shape.
- the leaf spring 740 is fabricated from a conductive material including, but not limited to metals and metal alloys.
- the second leaf spring contact 750 includes a base 760 , a vertical transition 770 , and a leaf spring 780 .
- the base 760 is substantially planar and includes an opening 762 for allowing the base 760 to be surface mounted onto the circuit board 210 ( FIG. 2A ).
- the base 760 is substantially rectangular when viewed from above. Although this exemplary embodiment depicts the base 760 being substantially rectangular when viewed from above, other alternative exemplary embodiments can have the base 760 be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment.
- the base 760 is fabricated from a conductive material including, but not limited to metals and metal alloys.
- the vertical transition 770 is substantially planar and is oriented substantially perpendicular in one direction to the base 760 .
- the vertical transition 770 is substantially rectangular when viewed from the front surface 772 of the vertical transition 770 .
- this exemplary embodiment depicts the vertical transition 770 being substantially rectangular when viewed from the front surface 772
- other alternative exemplary embodiments can have the vertical transition 770 be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment.
- the vertical transition 770 is fabricated from a conductive material including, but not limited to metals and metal alloys. Typically, the vertical transition 770 is fabricated integrally to the base 760 .
- the vertical transition 770 is depicted as being substantially perpendicular to the base 760 , the vertical transition 770 can be angular to the base 760 without departing from the scope and spirit of the exemplary embodiment.
- the leaf spring 780 is substantially chevron-shaped and is configured to protrude outwardly from the upper edge of the vertical transition's 770 front surface 772 .
- the leaf spring 780 is integrally formed with the vertical transition 770 .
- the leaf spring 780 is shown to be chevron-shaped, the leaf spring 780 can be any geometric shape, such as a curve-shape.
- the leaf spring 780 is fabricated from a conductive material including, but not limited to metals and metal alloys.
- the front surface 732 of the first leaf spring contact's 710 vertical transition 730 faces the front surface 772 of the second leaf spring contact's 750 vertical transition 770 .
- the first leaf spring contact 710 and the second leaf spring contact 750 are mounted in close proximity to one another and facing one another so that the first leaf spring contact's 710 leaf spring 740 is contacting the second leaf spring contact's 750 leaf spring 780 to form a connection point 790 , as shown in FIG. 7B .
- the mechanical disconnect male jack's 190 can be a piece of paper, piece of cardboard, or any other non-conducting material that is insertable between the first leaf spring contact 710 and the second leaf spring contact 750 .
Abstract
Description
- This patent application is a continuation of and claims priority under U.S.C. §120 to U.S. patent application Ser. No. 12/633,612, entitled “External Mechanical Battery Disconnect For Emergency Lighting Products,” filed Dec. 8, 2009, the entirety of which is incorporated by reference herein.
- The present invention relates generally to emergency lighting devices and more particularly, to emergency lighting devices having an internal battery capable of being disconnected externally.
- Conventional emergency lighting devices are relied on during emergency situations, such as power outages. One example of an emergency lighting device is an exit sign. Under some government codes, these emergency devices are required to exhibit a specific amount of illumination and have an emergency backup power source to provide illumination for a specified period of time when electrical power to the device is interrupted. These conventional emergency lighting devices include circuitry that illuminates emergency lights during a power outage using an internal battery or similar power supply.
- Typically emergency lighting devices are thoroughly tested at the factory to ensure that they will function properly once installed. To test the emergency lighting device at the factory, the emergency lighting device is completely assembled. The circuitry is then coupled to a testing machine to ensure proper functioning. Upon successful testing of the circuitry, the device's battery is disconnected from the circuitry so that the battery's charge is not reduced below an acceptable level prior to installation. The emergency lighting device is then sent from the factory.
- One problem with conventional emergency lighting devices is that they are time consuming to install because they are not shipped from the factory in a condition that is ready for immediate installation. When an installer or electrician installs the device, the typical procedure is to install the device, remove a portion of the housing, plug in the battery, energize the circuit breaker to test the circuitry, de-energize the circuit breaker, disconnect the battery, replace the portion of the housing, wait for building inspection, remove the portion of the housing, plug in the battery again, energize the circuit breaker, and replace the portion of the housing.
- In view of the foregoing, there is a need in the art for providing an emergency lighting device that is easier and faster to install. Additionally, there is a need in the art for providing an emergency lighting device that is installable without need for disassembly during the inspection phase. There is a further need in the art for providing an emergency lighting device that has a battery physically, but not electrically, coupled with the device's circuitry, to prevent loss of charge prior to installation. Furthermore, there is a need for providing a simpler method for installing the emergency lighting device.
- According to one exemplary embodiment, an emergency lighting device can include a housing that can further include a battery, a switching mechanism, and one or more light sources. The switching mechanism can be electrically coupled to the battery. The light sources can be electrically coupled to the internal battery through the switching mechanism. The switching mechanism can receive a plug that electrically disconnects the light sources from the battery.
- According to another exemplary embodiment, an emergency lighting device can include a housing that can further include a battery, a switching mechanism, one or more light sources, and a circuit breaker. The switching mechanism can be electrically coupled to the battery. The light sources can be electrically coupled to the battery through the switching mechanism and can also be electrically coupled to an external power source. The circuit breaker can be electrically coupled to the battery and to the external power source. The circuit breaker can be electrically positioned upstream of the one or more light sources and downstream of the battery, the switching mechanism, and the external power source. The circuit breaker can provide power to the light sources from the external power supply during normal operation and can automatically provide power to the light sources from the internal battery in the event of power failure from the external power source. The switching mechanism can receive an external plug to electrically disconnect the light sources from the battery.
- According to another exemplary embodiment, a method for installing an emergency lighting device can include mounting an emergency lighting device onto a mounting structure, electrically coupling the emergency lighting device to an external power source, and removing an external plug from a switching mechanism to enable operation of a back-up power source. The emergency lighting device can include a housing and an external plug. The housing can include a battery, a switching mechanism, and one or more light sources. The battery can provide a back-up power source. The switching mechanism can be electrically coupled to the battery. The light sources can be electrically coupled to the battery through the switching mechanism. The external plug can be releasably coupled to the switching mechanism.
- The foregoing and other features and aspects of the invention are best understood with reference to the following description of certain exemplary embodiments, when read in conjunction with the accompanying drawings, wherein:
-
FIG. 1A is a front elevation view of an assembled exit sign in accordance with an exemplary embodiment of the present invention; -
FIG. 1B is a perspective view of the exit sign ofFIG. 1A in accordance with an exemplary embodiment of the present invention; -
FIG. 2A is a perspective view of a frame of the exit sign with a mechanical disconnect male jack coupled to the frame in accordance with an exemplary embodiment of the present invention; -
FIG. 2B is a perspective view of the frame ofFIG. 2A with the mechanical disconnect male jack decoupled from the frame in accordance with an exemplary embodiment of the present invention; -
FIG. 3A is a perspective view of an audio jack presented inFIG. 2A in accordance with an exemplary embodiment of the present invention; -
FIG. 3B is a side elevation view of the audio jack ofFIG. 3A in accordance with an exemplary embodiment of the present invention; -
FIG. 4 is a cross-sectional view of the interaction between the audio jack ofFIGS. 3A and 3B and the mechanical disconnect male jack in accordance with an exemplary embodiment of the present invention; -
FIG. 5 is a schematic block diagram of the exit sign ofFIG. 1A in accordance with an exemplary embodiment of the present invention; -
FIG. 6A is a perspective view of an alternative switching mechanism in accordance with another exemplary embodiment of the present invention; -
FIG. 6B is a side view of the switching mechanism ofFIG. 6A in accordance with an exemplary embodiment of the present invention; -
FIG. 7A is a perspective view of a second alternative switching mechanism in accordance with yet another exemplary embodiment of the present invention; and -
FIG. 7B is a side view of the switching mechanism ofFIG. 7A in accordance with an exemplary embodiment of the present invention. - The drawings illustrate only exemplary embodiments of the invention and are therefore not to be considered limiting of its scope, as the invention may admit to other equally effective embodiments.
- The present invention is directed to emergency lighting devices having a battery capable of being disconnected externally. Although the description of exemplary embodiments is provided below in conjunction with exit signs, alternate embodiments of the invention may be applicable to other types of emergency lighting devices that have a battery installed within the device. Additionally, although the description of exemplary embodiments is provided below in conjunction with light emitting diodes (LEDs) in an exit sign, alternate embodiments of the invention is applicable to other types of light sources in an emergency lighting device including, but not limited to, incandescent lamps, fluorescent lamps, compact fluorescent lamps, organic light emitting diodes, high intensity discharge (“HID”) lamps, or a combination of lamp types known to persons of ordinary skill in the art.
- The invention is better understood by reading the following description of non-limiting, exemplary embodiments with reference to the attached drawings, wherein like parts of each of the figures are identified by like reference characters, and which are briefly described as follows.
FIG. 1A is a front elevation view of an assembledexit sign 100 in accordance with an exemplary embodiment of the present invention.FIG. 1B is a perspective view of the assembledexit sign 100 ofFIG. 1A in accordance with an exemplary embodiment of the present invention. Referring toFIGS. 1A and 1B , the assembledexit sign 100 includes ahousing 110, acanopy 150 coupled to thehousing 110, and a switching mechanism access opening 160 formed at an exterior surface of thehousing 110. - The
housing 110 includes afront panel 120, aframe 130, and arear panel 140, which collectively form the housing'stop edge 112,bottom edge 114,first side edge 116, andsecond side edge 118. While thefront panel 120 in this exemplary embodiment is substantially rectangular, thefront panel 120 can be any geometric or non-geometric shape without departing from the scope and spirit of the exemplary embodiment. Thefront panel 120 is removably coupled to theframe 130 using fasteners, clips, snap fittings, screws, or any other coupling device or method known to people having ordinary skill in the art. The exemplaryfront panel 120 is generally non-transparent and includes fourlight passageway openings front panel 120. Light beams projected from one or more LEDs 230 (FIG. 2A ) pass through eachlight passageway opening light passageway openings front panel 120 optionally includes two additional light passageway openings that define directional symbols, namely, opposedchevron arrow openings FIG. 2A ) also pass. In an alternative embodiment, thefront panel 120 is clear and translucent, but at least some portions thereof are made non-translucent by a manner known in the art, such as by the application of paint or another masking medium. - The
exemplary frame 130 is substantially rectangular and is configured to be coupled to thefront panel 120 and therear panel 140. However, in alternative embodiments theframe 130 is capable of being any geometric or non-geometric shape without departing from the scope and spirit of the exemplary embodiment. According to the exemplary embodiment ofFIGS. 1A and 1B , theframe 130 includes acanopy 150 coupled to the frame's top edge. In one exemplary embodiment, thecanopy 150 provides support for coupling theexit sign 100 to a ceiling or wall structure (not shown). Alternatively, in lieu of or in addition to thecanopy 150, other mounting devices known to people of ordinary skill in the art are incorporated into or used in conjunction with theframe 130 to mount theexit sign 100 to a ceiling, mounting pole, wall, or other mounting structures. - The
frame 130 also includes the switchingmechanism access opening 160. In one exemplary embodiment, theopening 160 is formed at the frame's side edge towards its lower area. Alternatively, the switching mechanism access opening 160 is capable of being formed anywhere along the housing's exterior surface, adjacent the switching mechanism 240 (FIG. 2A ), without departing from the scope and spirit of the exemplary embodiment. The switching mechanism access opening 160 extends from the frame's exterior surface towards the frame's interior surface. The switching mechanism access opening 160 allows visual and/or physical access to the switching mechanism 240 (FIG. 2A ). The switching mechanism 240 (FIG. 2A ) receives at least a portion of the mechanical disconnectmale jack 190 to mechanically break (or disconnect) the electrical path between the removable internal battery 220 (FIG. 2A ) and the LEDs 230 (FIG. 2A ). Mechanically breaking the electrical path prevents the internal battery 220 (FIG. 2A ) from discharging power to the LEDs 230 (FIG. 2A ). As illustrated inFIG. 1B , the DC powerdisconnect test switch 170 and theDC power indicator 175 are positioned adjacent to the switchingmechanism access opening 160. The function of the DC powerdisconnect test switch 170 is to test the proper functionality of the internal battery 220 (FIG. 2A ) by simulating the interruption of DC voltage power when pressed inwardly. The function of theDC power indicator 175 is to signal the presence of AC voltage power. In one exemplary embodiment, theDC power indicator 175 is and LED. - In one exemplary embodiment, the
rear panel 140 is substantially rectangular and is removably coupled to theframe 130 opposite thefront panel 120. Alternatively, therear panel 140 is modifiable to any geometric or non-geometric shape without departing from the scope and spirit of the exemplary embodiment. Therear panel 140 is removably coupled to theframe 130 using fasteners, clips, snap fittings, screws, or any other coupling devices or method known to people having ordinary skill in the art. Therear panel 140 is generally non-transparent. Although, both thefront panel 120 and therear panel 140 are removable, alternative exemplary embodiments provide for only one of them being removable. - In alternative embodiments, the
rear panel 140 is similar to the embodiments as described for thefront panel 120. In one alternative embodiment, therear panel 120 is generally non-transparent and include one or more light passageway openings that illustrate any word, symbol, or illustration without departing from the scope and spirit of the exemplary embodiment. In another alternative embodiment, therear panel 140 is clear and translucent, but is made non-translucent by a manner known in the art, such as by the application of paint or other masking medium. -
FIG. 2A is a perspective view of theexit sign 100 with a mechanical disconnectmale jack 190 coupled to theframe 130 in accordance with an exemplary embodiment of the present invention.FIG. 2B is a perspective view of theframe 130 ofFIG. 2A with the mechanical disconnectmale jack 190 decoupled from theframe 130 in accordance with an exemplary embodiment of the present invention. Now referring toFIGS. 2A and 2B , theframe 130 includes acircuit board 210 having aninternal battery 220, one ormore LEDs 230, a DC powerdisconnect test switch 170, aDC power indicator 175, and aswitching mechanism 240. In one exemplary embodiment thebattery 220,LEDs 230switch 170,indicator 175, andswitching mechanism 240 are electrically coupled to thecircuit board 210. In one exemplary embodiment, thecircuit board 210 is positioned at least across a portion of the bottom edge of the interior surface of the frame; however, those of ordinary skill in the art will recognize that thecircuit board 210 is positionable anywhere within thehousing 110 without departing from the spirit and scope of the exemplary embodiment. Thecircuit board 210 includes several electrical components that are electrically coupled together by traces (not shown). Theexemplary circuit board 210 is fabricated using conducting layers and insulating layers, wherein the conducting layers are typically made of thin copper foil and the insulating layers are made of a dielectric material. Some examples of potential dielectric layers used for thecircuit board 210 include, but are not limited to, polytetrafluoroethylene, FR-4, FR-1, CEM-1, or CEM-3. - The
internal battery 220 is electrically coupled to thecircuit board 210 using one or more battery plugs 222, which are optionally disposed on thecircuit board 210. Once theinternal battery 220 has been electrically coupled to the battery plugs 222, theinternal battery 220 is electrically coupled to the electrical circuit (not shown) on thecircuit board 220. According to this exemplary embodiment, theinternal battery 220 is a rechargeable battery. Alternatively, theinternal battery 220 is any suitable device capable of storing power and providing that power to theLEDs 230 during power outages or other emergency situations. Suitableinternal batteries 220 include rechargeable batteries, dry cell batteries, lead acid batteries, other types of batteries, or any other suitable storage device presently existing or made available in the future. - The
LEDs 230 are electrically coupled to, and in one exemplary embodiment, mounted onto, thecircuit board 210. TheLEDs 230 provide light sources that emit light through portions of thefront panel 120. During normal operations, theLEDs 230 are supplied power from an external power source (not shown). During a power interruption of the external power source, theinternal battery 220 supplies back-up power to theLEDs 230 so that theLEDs 230 can function continuously without interruption. Theinternal battery 220 is designed to provide emergency back-up power for a predetermined time period. TheLEDs 230 will be powered by theinternal battery 220 until either the power from the external power source is restored or the charge on theinternal battery 220 is depleted. AlthoughFIG. 2A illustrates tenLEDs 230, this number is exemplary only and greater or fewer numbers ofLEDs 230 are within the scope and spirit of the exemplary embodiment. According to some exemplary embodiments, theLEDs 230 emit light in only one color. However, in alternative embodiments, theLEDs 230 emit light in two or more different colors. In the embodiments with two or more differentcolored LEDs 230, the LEDs of one color can operate simultaneously with the LEDs of another color or the LEDs of one color can operate in lieu of the LEDs of another color. - The DC power
disconnect test switch 170 is electrically coupled to thecircuit board 210. In one exemplary embodiment, theswitch 170 is electrically coupled to a portion of thecircuit board 210 that is opposite that where theinternal battery 220 is electrically coupled. In the alternative, the DC powerdisconnect test switch 170 is capable of being electrically coupled anywhere on thecircuit board 210 or anywhere in the housing without departing from the scope and spirit of the exemplary embodiment. In this exemplary embodiment, the DC powerdisconnect test switch 170 is positioned upstream in the circuitry on thecircuit board 210 from the circuitry located between theinternal battery 220 and theLEDs 230. The function of the DC powerdisconnect test switch 170 is to test the electronic of the backup system tointernal battery 220 by simulating the interruption of DC voltage power that is eventually generated from the external power source. A portion of the DC powerdisconnect test switch 170 is accessible from the exterior of theframe 130 so that a user can operate the DC powerdisconnect test switch 170 when desired. Upon testing this backup system and determining that theLEDs 230 are not functioning, the user can replace theinternal battery 220. - The
DC power indicator 175 is also electrically coupled to thecircuit board 210. In one exemplary embodiment, theindicator 175 is electrically coupled along another end of thecircuit board 210 opposite the end where the exemplaryinternal battery 220 is electrically coupled. However, as with the other components, theDC power indicator 175 can be electrically coupled anywhere on thecircuit board 210 or anywhere in thehousing 110 without departing from the scope and spirit of the exemplary embodiment. In one exemplary embodiment, theDC power indicator 175 is positioned downstream in the circuitry from the DC powerdisconnect test switch 170 but parallel to the circuitry between theinternal battery 220 and theLEDs 230. The function of theDC power indicator 175 is to signal the presence of AC voltage power. At least a portion of theDC power indicator 175 is viewable to an observer so that the observer is able to determine whether there is a presence of AC voltage power to thecircuit board 210. When theDC power indicator 175 is not lit, it indicates that AC voltage power is not supplied to the circuit board. Hence, if theLEDs 230 are lit up when theDC power indicator 175 is not lit, theinternal battery 220 is supplying the necessary power to theLED 230 since there is no AC power being supplied to thecircuit board 210. However, if theLEDs 230 are not lit, either theinternal battery 220 is not properly functioning and may need replacement or the circuitry between theinternal battery 220 and theLEDs 230 has malfunctioned. - The
switching mechanism 240 is also electrically coupled to thecircuit board 210. In one exemplary embodiment, theswitching mechanism 240 is electrically coupled at the end of thecircuit board 210 opposite the end where theinternal battery 220 is electrically coupled. In this exemplary embodiment, theswitching mechanism 240 is electrically coupled between theDC power indicator 175 and the DC powerdisconnect test switch 170. Alternatively, theswitching mechanism 240 is capable of being electrically coupled anywhere on thecircuit board 210 or anywhere in thehousing 110 so long as theswitching mechanism 240 is positioned adjacent the switching mechanism access opening 160 without departing from the scope and spirit of the exemplary embodiment. In one exemplary embodiment, theswitching mechanism 240 is positioned downstream in the circuitry from theinternal battery 210 and upstream of theLEDs 230. Theswitching mechanism 240 provides an external electrical disconnect within the circuitry between theinternal battery 220 and theLEDs 230 so that thebattery 220 does not discharge to below acceptable levels prior to theexit sign 100 being installed. Theswitching mechanism 240 includes afemale receptacle 242 that is accessible from the frame's exterior so that at least a portion of the mechanical disconnectmale jack 190 is insertable therein. According to one exemplary embodiment, theswitching mechanism 240 is a mono audio jack 300 (FIGS. 3A and 3B ). Alternatively, the switching mechanism includes any device, such as a phone jack, that is normally closed and becomes open once an object is inserted within the device without departing from the scope and spirit of the exemplary embodiment. - As illustrated in
FIG. 2A , a portion of the mechanical disconnectmale jack 190 is inserted within thefemale receptacle 242 of theswitching mechanism 240 to electrically disconnect the circuitry between theinternal battery 220 and theLEDs 230. This feature is called an external disconnect feature. In this position, theinternal battery 220 does not discharge electrical energy to theLEDs 230. The circuit breaker is de-energized when the mechanical disconnectmale jack 190 is inserted within theswitching mechanism 240. Thisswitching mechanism 240 and insertion of the mechanical disconnectmale jack 190 within theswitching mechanism 240 allows theinternal battery 220 to be installed in theexit sign 100 and mechanically coupled to thecircuit board 210 prior to purchase. Installation is easier and quicker because theexit sign 100 does not have to be disassembled to install theinternal battery 220. Additionally, theexit sign 100 does not have to be disassembled to de-energize the circuit breaker for building inspection, but instead, the circuit is de-energized by using the external disconnect feature. Once the mechanical disconnectmale jack 190 is removed from thefemale receptacle 242, as shown inFIG. 2B , the circuitry between theinternal battery 220 and theLEDs 230 is electrically recoupled and theinternal battery 220 is able to provide electrical power to theLEDs 230 if the AC power source fails. - The exemplary mechanical disconnect
male jack 190 includes aplug end 192 that is insertable into thefemale receptacle 242 of theswitching mechanism 240. In the exemplary embodiment, theplug end 192 is fabricated from plastic. However, in alternative embodiments, theplug end 192 is fabricated from any suitable non-conducting material including, but not limited to, paper, wood, and fish paper without departing from the scope and spirit of the exemplary embodiment. In still other exemplary embodiments, theplug end 192 is fabricated from conducting and non-conducting materials, wherein at least a portion of the non-conducting material is inserted into thefemale receptacle 242 to break the electrical connection within theswitching mechanism 240. For example, aplug end 192 fabricated from conducting material is surrounded or sheathed by a non-conducting material. Optionally, theplug end 192 is coupled to asign 194. According to one exemplary embodiment, thesign 194 is fabricated from the same material as theplug end 192. Alternatively, thesign 194 is fabricated from either non-conducting material, conducting material, or a combination of both conducting and non-conducting materials. Theexemplary sign 194 is alternatively a physical representation of its function, for example, a “Stop Sign”, a written representation of its function, for example, the words “Stop: Battery Disconnected”, a device that is easier for a user grasp, or any combination thereof. -
FIGS. 3A and 3B are views of theaudio jack 300 ofFIG. 2A in accordance with an exemplary embodiment of the present invention.FIG. 4 is a cross-sectional view of the interaction between theaudio jack 300 and the mechanical disconnect male jack according to an exemplary embodiment of the present invention. Referring toFIGS. 3A , 3B and 4, theaudio jack 300 includes anaudio jack housing 310, aport 320, afirst leg 330, asecond leg 332, and athird leg 334. In one exemplary embodiment, theaudio jack 300 is a mono audio jack. - The exemplary
audio jack housing 310 is substantially rectangular and houses afirst metal contact 414 and asecond metal contact 416, which will be discussed in further detail below. Although this exemplary embodiment depicts theaudio jack housing 310 being substantially rectangular, theaudio jack housing 310 is capable of being any geometric or non-geometric shape, including, but not limited to, square, circular, triangular or trapezoidal, without departing from the scope and spirit of the exemplary embodiment. Additionally, although the exemplaryaudio jack housing 310 houses twometal contacts audio jack housing 310 without departing from the scope and spirit of the exemplary embodiment. In one exemplary embodiment, theaudio jack housing 310 is fabricated from a non-conductive material, such as a plastic. - The
port 320 is substantially circular and is coupled to the audio jack housing's surface. Although theexemplary port 320 is circular, alternative embodiments of theport 320 are any geometric or non-geometric shape that securely receive thecorresponding plug end 192. Theport 320 securely receive theplug end 192 of the mechanical disconnectmale jack 190 through the port's 320female receptacle 242, which extends from the exterior surface of theport 320 to the interior of theaudio jack housing 310. In one exemplary embodiment, there is a friction fit between theport 320 and theplug end 192 of thejack 190. Once theplug end 192 is inserted into theport 320, theplug end 192 is removable from theport 320 by applying a pulling force to theplug end 192 to overcome the friction fit. According to one exemplary embodiment, theport 320 is fabricated from the same material as theaudio jack housing 310 and is generally manufactured with theaudio jack housing 310 as an integral component. However, theport 320 can be fabricated separately and thereafter coupled to theaudio jack housing 310. In those embodiments where theport 320 is separately manufactured, theport 320 is typically fabricated from a conducting material or a non-conducting material. Additionally, theexemplary port 320 is positioned so that thefemale receptacle 242 is aligned with aconnection point 430, which is where thefirst metal contact 414 makes contact with thesecond metal contact 416. - The
first leg 330,second leg 332, andthird leg 334 are coupled to theaudio jack housing 310 and make contact with either thefirst metal contact 414 or thesecond metal contact 416. Thelegs audio jack 300 to the circuit board 210 (FIG. 2A ), where conductive traces (not shown) are coupled to at least two of thelegs audio jack 300 is mounted to thecircuit board 210 in such a manner that theport 320 is aligned with the switching mechanism access opening 160 (FIG. 1A ). - The
audio jack 300 is mounted onto a circuit board 210 (FIG. 2A ), such that thefirst leg 330 is coupled to a current-intrace line 410 and thesecond leg 332 is coupled to a current-out trace line 420. In one exemplary embodiment, thefirst leg 330 andthird leg 334 are connected to thefirst metal contact 414 at its opposing ends. Thesecond leg 332 is coupled to thesecond metal contact 416. Thesecond metal contact 416 makes contact with thefirst metal contact 414 at theconnection point 430. In certain exemplary embodiments, thefirst metal contact 414 andsecond metal contact 416 are normally closed. Opening thefirst metal contact 414 andsecond metal contact 416 is accomplished by placing a device, such as a plug or jack, through thefemale receptacle 242 of theport 320 so that the device extends to theconnection point 430 and breaks the contact between thesecond metal contact 416 and thefirst metal contact 414. Although, the exemplaryfirst metal contact 414 andsecond metal contact 416 are fabricated from a metal or metal alloy, alternatively they are fabricated from any conducting material without departing from the scope and spirit of the exemplary embodiment. Further, while the description herein relate to placing a male plug or jack into a female receptacle, it is equally possible for the plug or jack to be female and for the port or switching mechanism to have male contacts that interact with and are slidably received by the female plug or jack. Additionally, although thefirst leg 330, thefirst metal contact 414, and thethird leg 334 are shown to be fabricated as individual components, thefirst leg 330, thefirst metal contact 414, andthird leg 334 can be fabricated as a single component without departing from the scope and spirit of the exemplary embodiment. Similarly, although the exemplarysecond leg 332 andsecond metal contact 416 are fabricated individually, alternative embodiments of thesecond leg 332 andsecond metal contact 416 are fabricated as a single component without departing from the scope and spirit of the exemplary embodiment. - According to
FIG. 4 , when the mechanical disconnect malejack plug end 192 is not inserted within theaudio jack 300 and theexit sign 100 has not yet been electrically coupled to an AC power source, current flows from the internal battery 220 (FIG. 2A ) through the current intrace line 410 to thefirst leg 330, to thefirst metal contact 414, to thesecond metal contact 416, to thesecond leg 332, and then to the current-out trace line 420. Hence, the internal battery 220 (FIG. 2A ) is slowly discharged during this time when theexit sign 100 has not been installed because its circuitry is closed and it is providing power to theLEDs 230. When theplug end 192 is inserted within theaudio jack 300, current flow is prevented between the internal battery 220 (FIG. 2A ) and the LEDs 230 (FIG. 2A ) due to an opening in the circuit. In one exemplary embodiment, thesecond metal contact 416 is raised so that thesecond metal contact 416 does not make contact, thereby creating an open, with thefirst metal contact 414 and eliminating theconnection point 430. Thus, once theplug end 192 is inserted within theaudio jack 300, the internal battery 220 (FIG. 2A ) does not discharge power to the LEDs 230 (FIG. 2A ). The internal battery 220 (FIG. 2A ) can now be electrically coupled to the circuit board 210 (FIG. 2A ) and shipped in an installation-ready state with theplug end 192 inserted within theaudio jack 300. The mechanical disconnect malejack plug end 192 can be easily inserted into and removed from theaudio jack 300 any number of times. -
FIG. 5 is a schematic block diagram 500 of theexit sign 100 ofFIG. 1A in accordance with an exemplary embodiment of the present invention. Referring now toFIGS. 1-5 , the usual source of power to an emergency exit sign is alternating current voltage orVAC 505. Standard AC voltages for operating theexit sign 100 include 120V, 240V, or 277V. Since the input AC voltage is high, a step-down transformer typified by step-downtransformer 510 is sometimes used to bring the input voltage down to a lower operating AC voltage, for example 8 VAC. The 8 VAC is then passed through an AC/DC converter 515. In one exemplary embodiment, the AC/DC converter 515 is a bridge rectifier. - The direct current voltage or VDC is then connected to a momentary DC power
disconnect test switch 170 that is normally closed. The function of DC powerdisconnect test switch 170 is to test the electronic circuitry of the backup system to theinternal battery 220 by simulating the interruption of AC voltage power. Once the DC powerdisconnect test switch 170 is operated and the switch is opened, converted DC voltage from theVAC 505 to theLEDs 230 is terminated. Thus, the AC/DC converter 515 also is connected to ground 535 thereby completing the current path through the AC/DC converter 515 when the DC powerdisconnect test switch 170 is operated. Once the DC powerdisconnect test switch 170 is operated, power to theLEDs 230 is supplied from theinternal battery 220. TheLEDs 230 are connected to ground 535, thereby completing the current paths throughLEDs 230, irrespective of whether the power is supplied by theVAC 505 or theinternal battery 220. - During normal operation when the DC power
disconnect test switch 170 is closed and theLEDs 230 are supplied power from theVAC 505, the DC voltage flows from the DC powerdisconnect test switch 170 to theDC power indicator 175, which signals the presence of AC voltage power when lit. TheDC power indicator 175 is connected to ground 535 thereby completing the current path throughDC power indicator 175. - Also during normal operation when the DC power
disconnect test switch 170 is closed and theLEDs 230 are supplied power from theVAC 505, the DC voltage flows from the DC powerdisconnect test switch 170 to acharging circuit 520, which is then connected to the rechargeableinternal battery 220. At this time, theinternal battery 220 is recharged from the power provided by theVAC 505. - Further during normal operation when the DC power
disconnect test switch 170 is closed and theLEDs 230 are supplied power from theVAC 505, the DC voltage flows from the DC powerdisconnect test switch 170 to acircuit breaker 525. The output of thecircuit breaker 525 then goes through acurrent limiter 530, and then to theLEDs 230. In one exemplary embodiment, the function of thecircuit breaker 525 is to provide power to theLEDs 230 when normal input DC voltage is present, but will automatically switch over to backupinternal battery 220 DC power in the event of an input AC power failure. - In the event of an input AC power failure, the
circuit breaker 525 trips so that DC voltage is supplied to theLEDs 230 from theinternal battery 220. The DC voltage goes from theinternal battery 220 through theswitching mechanism 240, to thecircuit breaker 525, through thecurrent limiter 530, and then to theLEDs 230. In certain exemplary embodiments, the storage capacity of theinternal battery 220 provides enough reserve voltage to power all of theLEDs 230 in theexit sign 100 for a duration of 1.5 to 3.0 hours when there is no AC voltage input. As previously mentioned, the purpose of theswitching mechanism 240 is to allow theinternal battery 220 to be installed within the exit sign and mechanically break the circuitry between theinternal battery 220 and thecircuit breaker 525 externally of theexit sign 100. When the circuitry between theinternal battery 220 and thecircuit breaker 525 is broken and the LEDs are not supplied power by theVAC 505, theinternal battery 220 does not discharge. -
FIG. 6A is a perspective view of analternative switching mechanism 600 in accordance with another exemplary embodiment of the present invention.FIG. 6B is a side view of thealternative switching mechanism 600 ofFIG. 6A . Referring toFIGS. 6A and 6B ,alternative switching mechanism 600 includes abutton contact 610 and aleaf spring contact 650. - The
button contact 610 includes abutton contact housing 620, abutton 630, afirst leg 640, asecond leg 642, and athird leg 644. In one exemplary embodiment, thebutton contact housing 620 is substantially rectangular when viewed from itsfront surface 612 and substantially triangular when viewed from itsside surface 614. Alternatively thebutton contact housing 620 is capable of being formed in any geometric or non-geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment. In one exemplary embodiment, thebutton contact housing 620 is fabricated from a conductive material including. Examples of potential conductive materials include, but are not limited to, metals and metal alloys. - The
button 630 is substantially circular and is configured to protrude outwardly from the button contact housingfront surface 612. Alternatively, thebutton 630 is made in other geometric or non-geometric shapes. In this exemplary embodiment, a recess is formed within thebutton 630. However, in alternative embodiments, the recess is optional. In certain exemplary embodiments, the button is integrally formed with thebutton contact housing 620. Theexemplary button 630 is fabricated from a conductive material, examples of which include, but are not limited to, metals and metal alloys. - The
first leg 640,second leg 642, andthird leg 644 are coupled to thebutton contact housing 620. In one exemplary embodiment, thelegs legs button contact 610 to the circuit board 210 (FIG. 2A ). In this exemplary embodiment,leg 644 also electrically couples thebutton contact 610 to a conductive trace (not shown) on the circuit board 210 (FIG. 2A ). However, any of the legs are capable of electrically coupling thebutton contact 610 to the trace without departing from the scope and spirit of the exemplary embodiment. Additionally, the number of legs can be greater or less without departing from the scope and spirit of the exemplary embodiment. - The
leaf spring contact 650 includes a leafspring contact housing 660, aleaf spring 670, afirst leg 680, asecond leg 682, and athird leg 684. The leafspring contact housing 660 is substantially rectangular when viewed from itsfront surface 652 and substantially triangular when viewed from itsside surface 654. Although this exemplary embodiment depicts the leafspring contact housing 660 being substantially rectangular when viewed from itsfront surface 652 and substantially triangular when viewed from itsside surface 654, other alternative exemplary embodiments can have the leaf spring contact housing's 660 shape be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment. The leafspring contact housing 660 is fabricated from a conductive material including, but not limited to metals and metal alloys. - The
leaf spring 670 is substantially chevron-shaped and is configured to protrude outwardly from the leaf spring contact housing's 660front surface 652. Theleaf spring 670 is integrally formed with the leafspring contact housing 660. Although theleaf spring 670 is shown to be chevron-shaped, theleaf spring 670 can be any geometric shape, such as a curve-shape. Theleaf spring 670 is fabricated from a conductive material including, but not limited to metals and metal alloys. - The
first leg 680, thesecond leg 682, and thethird leg 684 are coupled to the leafspring contact housing 660. Thelegs legs leaf spring contact 650 to the circuit board 210 (FIG. 2A ).Leg 684 also is used to electrically couple theleaf spring contact 650 to a second conductive trace (not shown) on the circuit board (FIG. 2A ). Althoughleg 684 is used to electrically couple theleaf spring contact 650 to a second conductive trace (not shown) on the circuit board 210 (FIG. 2A ), any of the legs can be used to electrically couple theleaf spring contact 650 to the second trace without departing from the scope and spirit of the exemplary embodiment. Additionally, although three legs are used in this embodiment, the number of legs can be greater or less without departing from the scope and spirit of the exemplary embodiment. - When mounting the
button contact 610 and theleaf spring contact 650 to the circuit board 210 (FIG. 2A ), thefront surface 612 of thebutton contact 610 faces thefront surface 652 of theleaf spring contact 650. Thebutton contact 610 and theleaf spring contact 650 are mounted in close proximity to one another so that theleaf spring 670 is contacting thebutton 630 to form aconnection point 690, as shown inFIG. 6B . Thus, when the mechanical disconnect male jack's 190 (FIG. 2B ) plug end 192 (FIG. 2B ) is inserted between thebutton contact 610 and theleaf spring contact 650, the electrical contact between theleaf spring 670 and thebutton 630 is broken. In other words, theconnection point 670 is eliminated. However, when the mechanical disconnect male jack's 190 (FIG. 2B ) plug end 192 (FIG. 2B ) is removed from between thebutton contact 610 and theleaf spring contact 650, the electrical contact between theleaf spring 670 and thebutton 630 is restored. In other words, theconnection point 670 is reformed. The mechanical disconnect male jack's 190 (FIG. 2B ) can be a piece of paper, piece of cardboard, or any other non-conducting material that is insertable between thebutton contact 610 and theleaf spring contact 650. -
FIGS. 7A and 7B are views of a secondalternative switching mechanism 700 in accordance with yet another exemplary embodiment of the present invention. Now referring toFIGS. 7A and 7B , the secondalternative switching mechanism 700 includes a firstleaf spring contact 710 and a secondleaf spring contact 750. - The first
leaf spring contact 710 includes abase 720, avertical transition 730, and aleaf spring 740. Thebase 720 is substantially planar and includes anopening 722 for allowing the base 720 to be surface mounted onto the circuit board 210 (FIG. 2A ). Thebase 720 is substantially rectangular when viewed from above. Although this exemplary embodiment depicts the base 720 being substantially rectangular when viewed from above, other alternative exemplary embodiments can have the base 720 be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment. Thebase 720 is fabricated from a conductive material including, but not limited to metals and metal alloys. - The
vertical transition 730 is substantially planar and is oriented substantially perpendicular in one direction to thebase 720. Thevertical transition 730 is substantially rectangular when viewed from thefront surface 732 of thevertical transition 730. Although this exemplary embodiment depicts thevertical transition 730 being substantially rectangular when viewed from thefront surface 732, other alternative exemplary embodiments can have thevertical transition 730 be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment. Thevertical transition 730 is fabricated from a conductive material including, but not limited to metals and metal alloys. Typically, thevertical transition 730 is fabricated integrally to thebase 720. Although thevertical transition 730 is depicted as being substantially perpendicular to thebase 720, thevertical transition 730 can be angular to thebase 720 without departing from the scope and spirit of the exemplary embodiment. - The
leaf spring 740 is substantially chevron-shaped and is configured to protrude outwardly from the upper edge of the vertical transition's 730front surface 732. Theleaf spring 740 is integrally formed with thevertical transition 730. Although theleaf spring 740 is shown to be chevron-shaped, theleaf spring 740 can be any geometric shape, such as a curve-shape. Theleaf spring 740 is fabricated from a conductive material including, but not limited to metals and metal alloys. - Similarly, the second
leaf spring contact 750 includes abase 760, avertical transition 770, and aleaf spring 780. Thebase 760 is substantially planar and includes anopening 762 for allowing the base 760 to be surface mounted onto the circuit board 210 (FIG. 2A ). Thebase 760 is substantially rectangular when viewed from above. Although this exemplary embodiment depicts the base 760 being substantially rectangular when viewed from above, other alternative exemplary embodiments can have the base 760 be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment. Thebase 760 is fabricated from a conductive material including, but not limited to metals and metal alloys. - The
vertical transition 770 is substantially planar and is oriented substantially perpendicular in one direction to thebase 760. Thevertical transition 770 is substantially rectangular when viewed from thefront surface 772 of thevertical transition 770. Although this exemplary embodiment depicts thevertical transition 770 being substantially rectangular when viewed from thefront surface 772, other alternative exemplary embodiments can have thevertical transition 770 be any geometric shape, including, but not limited to, square, circular, or triangular without departing from the scope and spirit of the exemplary embodiment. Thevertical transition 770 is fabricated from a conductive material including, but not limited to metals and metal alloys. Typically, thevertical transition 770 is fabricated integrally to thebase 760. Although thevertical transition 770 is depicted as being substantially perpendicular to thebase 760, thevertical transition 770 can be angular to thebase 760 without departing from the scope and spirit of the exemplary embodiment. - The
leaf spring 780 is substantially chevron-shaped and is configured to protrude outwardly from the upper edge of the vertical transition's 770front surface 772. Theleaf spring 780 is integrally formed with thevertical transition 770. Although theleaf spring 780 is shown to be chevron-shaped, theleaf spring 780 can be any geometric shape, such as a curve-shape. Theleaf spring 780 is fabricated from a conductive material including, but not limited to metals and metal alloys. - When mounting the first
leaf spring contact 710 and the secondleaf spring contact 750 to the circuit board 210 (FIG. 2A ), thefront surface 732 of the first leaf spring contact's 710vertical transition 730 faces thefront surface 772 of the second leaf spring contact's 750vertical transition 770. The firstleaf spring contact 710 and the secondleaf spring contact 750 are mounted in close proximity to one another and facing one another so that the first leaf spring contact's 710leaf spring 740 is contacting the second leaf spring contact's 750leaf spring 780 to form aconnection point 790, as shown inFIG. 7B . Thus, when the mechanical disconnect male jack's 190 (FIG. 2B ) plug end 192 (FIG. 2B ) is inserted between the first leaf spring contact's 710leaf spring 740 and the second leaf spring contact's 750leaf spring 780, the electrical contact between theleaf spring 740 and theleaf spring 780 is broken. In other words, theconnection point 790 is eliminated. However, when the mechanical disconnect male jack's 190 (FIG. 2B ) plug end 192 (FIG. 2B ) is removed from between the firstleaf spring contact 710 and the secondleaf spring contact 750, the electrical contact between theleaf spring 740 and theleaf spring 780 is restored. In other words, theconnection point 790 is reformed. The mechanical disconnect male jack's 190 (FIG. 2B ) can be a piece of paper, piece of cardboard, or any other non-conducting material that is insertable between the firstleaf spring contact 710 and the secondleaf spring contact 750. - Although each exemplary embodiment has been described in detail, it is to be construed that any features and modifications that are applicable to one embodiment are also applicable to the other embodiments. Furthermore, although the invention has been described with reference to specific embodiments, these descriptions are not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments of the invention will become apparent to persons of ordinary skill in the art upon reference to the description of the exemplary embodiments. It should be appreciated by those of ordinary skill in the art that the conception and the specific embodiments disclosed may be readily utilized as a basis for modifying or designing other structures or methods for carrying out the same purposes of the invention. It should also be realized by those of ordinary skill in the art that such equivalent constructions do not depart from the spirit and scope of the invention as set forth in the appended claims. It is therefore, contemplated that the claims will cover any such modifications or embodiments that fall within the scope of the invention.
Claims (20)
Priority Applications (1)
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US13/780,328 US8721112B2 (en) | 2009-12-08 | 2013-02-28 | External mechanical battery disconnect for emergency lighting products |
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US12/633,612 US8388170B2 (en) | 2009-12-08 | 2009-12-08 | External mechanical battery disconnect for emergency lighting products |
US13/780,328 US8721112B2 (en) | 2009-12-08 | 2013-02-28 | External mechanical battery disconnect for emergency lighting products |
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US12/633,612 Continuation US8388170B2 (en) | 2009-12-08 | 2009-12-08 | External mechanical battery disconnect for emergency lighting products |
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US20130229782A1 true US20130229782A1 (en) | 2013-09-05 |
US8721112B2 US8721112B2 (en) | 2014-05-13 |
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US13/780,328 Active US8721112B2 (en) | 2009-12-08 | 2013-02-28 | External mechanical battery disconnect for emergency lighting products |
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US12/633,612 Active 2031-12-16 US8388170B2 (en) | 2009-12-08 | 2009-12-08 | External mechanical battery disconnect for emergency lighting products |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023083489A (en) * | 2019-01-25 | 2023-06-15 | 三菱電機株式会社 | Attachment structure, display device, and illuminating device |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2367189B1 (en) * | 2010-03-18 | 2013-09-04 | ABB Technology AG | Switch unit, and related method |
ITBO20110618A1 (en) * | 2011-11-04 | 2013-05-05 | Schneider Electric Ind Italia S P A | LIGHTING DEVICE PARTICULARLY FOR EMERGENCY LAMPS. |
DE202012003398U1 (en) * | 2011-12-01 | 2012-04-17 | Glocal Services UG (haftungsbeschränkt) | Site information device |
US20140176517A1 (en) * | 2012-12-21 | 2014-06-26 | Duggal Energy Solutions, Llc | Display |
US9496098B1 (en) | 2014-01-31 | 2016-11-15 | Cooper Technologies Company | Control system |
US10253956B2 (en) | 2015-08-26 | 2019-04-09 | Abl Ip Holding Llc | LED luminaire with mounting structure for LED circuit board |
CN106132154A (en) * | 2016-05-21 | 2016-11-16 | 广东拿斯特(国际)照明有限公司 | A kind of Novel firefighting emergent identification lamp circuit board support |
USD825003S1 (en) | 2017-01-31 | 2018-08-07 | Best Lighting Products, Inc. | Exit sign |
US9990868B1 (en) * | 2017-01-31 | 2018-06-05 | Best Lighting Products, Inc. | Compact, convertible exit sign |
CN109152125A (en) * | 2017-06-28 | 2019-01-04 | 群光电能科技股份有限公司 | Light emitting device and its driving method |
JP7030432B2 (en) * | 2017-06-30 | 2022-03-07 | 三菱電機株式会社 | Monitor device |
US10344929B1 (en) | 2017-09-01 | 2019-07-09 | Heathco, Llc | Battery backup for lighting system |
US10251279B1 (en) | 2018-01-04 | 2019-04-02 | Abl Ip Holding Llc | Printed circuit board mounting with tabs |
CN113679188B (en) * | 2021-08-11 | 2023-09-26 | 苏州弗乐卡电器科技发展有限公司 | Electrical apparatus box and have its cupboard |
CN114183719A (en) * | 2021-11-12 | 2022-03-15 | 安徽东嵘电子科技有限公司 | Fire-fighting emergency lighting lamp with replaceable mark and lighting emergency method thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5272605A (en) * | 1990-09-20 | 1993-12-21 | Dual-Lite Manufacturing, Inc. | Canopy mounting device for exit signs and the like |
CA2047830C (en) * | 1990-10-02 | 1997-04-29 | Edward P. Kozek | Exit sign with removable emergency power pack module |
US5446440A (en) * | 1993-01-06 | 1995-08-29 | Lederlite Corporation | Emergency sign and control circuit |
US5811938A (en) | 1995-06-01 | 1998-09-22 | The Bodine Company, Inc. | Emergency lighting ballast for starting and operating two compact fluorescent lamps with integral starter |
US6339296B1 (en) | 1999-05-11 | 2002-01-15 | Jerzy M. Goral | Low profile emergency ballast |
-
2009
- 2009-12-08 US US12/633,612 patent/US8388170B2/en active Active
-
2013
- 2013-02-28 US US13/780,328 patent/US8721112B2/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023083489A (en) * | 2019-01-25 | 2023-06-15 | 三菱電機株式会社 | Attachment structure, display device, and illuminating device |
Also Published As
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US8721112B2 (en) | 2014-05-13 |
US8388170B2 (en) | 2013-03-05 |
US20110134624A1 (en) | 2011-06-09 |
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